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Azolla enriches rice fields with nitrog...

Azolla enriches rice fields with nitrogen due to its association with
Or
A free living nitrogen fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is

A

Anabaena

B

Nostoc

C

Rhizobium

D

Frankia

Text Solution

Verified by Experts

The correct Answer is:
A
Azolla pinnata contains symbiont Anabaena in its leaf cavities. It is often inoculated to rice fields for nitrogen fixation.
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